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Gastroenterology and Hepatology

Meet Our Medical College of Wisconsin Gastroenterology and Hepatology Teams

Faculty

Kia Saeian, MD, MSc EPI

Interim Chief, Professor

Dilpesh S. Agrawal, MD, MRCP

Assistant Professor

Helmut Ammon, MD

Adjunct Professor

Gokulakrishnan Balasubramanian, MD

Associate Professor

Poonam Beniwal-Patel, MD

Associate Professor

William L. Berger, MD

Associate Professor

Phillip Chisholm, MD

Assistant Professor

Kulwinder S. Dua, MD, DSc, FACP, FRCP, MASGE

Professor

Francis Edeani, MD

Assistant Professor

Jose Franco, MD

Senior Associate Dean; Professor of Medicine

Ivan M. Lang, PhD, DVM

Adjunct Professor

Srivats Madhavan, MD

Assistant Professor

Benson T. Massey, MD

Professor

Bidyut K. Medda, PhD

Associate Professor

Rituparna Medda, DO

Assistant Professor

Ling Mei, MD

Associate Professor

James B. Nelson, MD

Adjunct Assistant Professor

Matthew T. Peller, MD

Assistant Professor

Rebecca Petrovski, DO

Assistant Professor

Patrick Sanvanson, MD

Associate Professor of Medicine

Reza Shaker, MD

Professor

Zachary Smith, DO, MSc

Associate Professor

W. Harley Sobin, MD

Adjunct Assistant Professor

Achuthan Sourianarayanane, MD, MRCP, FOMA

Associate Professor

Daniel J. Stein, MD

Director, Vice Chair for Education, Professor

Phaedra Tachtatzis, MD, MRCP, MBChB

Associate Professor

Hassaan Zia, MD

Assistant Professor

Physician Assistants & Nurse Practitioners

Kenneth Christensen, PA-C

Physician Assistant

Andrea Fetherston, APNP, MSN

Nurse Practitioner

Casey J. Fisher, BSN, MSN, APNP

Nurse Practitioner

Kristin M. Granlund, PA-C

Physician Assistant

Daniel K. Heimerl, PA-C

Physician Assistant

Kathryn Johnson, MPAS, PA-C

Physician Assistant

Alyssa L. Lackey, MSPAS, PA-C

Physician Assistant

Corinne Lange, APNP, FNP-C

Nurse Practitioner

Pamela Papenfuss, APNP, MSN, FNP

Nurse Practitioner

Mary Rachel Perrigo, APNP, AGPCNP-C

Nurse Practitioner

Scott D. Ramirez, DNP, APNP, NP-C

Nurse Practitioner

Keighla Slattery, APNP

Nurse Practitioner

Margo R. Gengler, PA-C

Physician Assistant

Miranda Waraxa, APNP, MSN

Nurse Practitioner

Community-Based Physicians & Advanced Practice Providers

Cristino C. Canga, MD

Staff Physician

William Davis, DO

Physician

Peter Eichenseer, MD

Staff Physician

Raman Khanna, MD

Staff Physician

Syed H. Mehdi, MD

Staff Physician

Madhuri H. Trivedi, MD

Staff Physician

Denine E. Murn, PA-C, MPAS

Physician Assistant

Emily Bartel, APNP

Nurse Practitioner

Lynn M. Giovetti, PA-C

Physician Assistant

Sara E. Glapa, APNP, MSN, BS

Nurse Practitioner

Michael J. Kosnik, PA-C

Physician Assistant

Kaitlin A. Meier, APNP, DNP

Nurse Practitioner

Sarah Patton, PA-C

Physician Assistant

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